3 * Copyright (c) 2003 Gerd Knorr
4 * Copyright (c) 2003 Pavel Machek
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <linux/module.h>
22 #include <linux/init.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/input.h>
32 module_param(debug, int, 0644); /* debug level (0,1,2) */
33 static int repeat_delay = 500;
34 module_param(repeat_delay, int, 0644);
35 static int repeat_period = 33;
36 module_param(repeat_period, int, 0644);
38 static int ir_rc5_remote_gap = 885;
39 module_param(ir_rc5_remote_gap, int, 0644);
40 static int ir_rc5_key_timeout = 200;
41 module_param(ir_rc5_key_timeout, int, 0644);
43 #define DEVNAME "bttv-input"
45 /* ---------------------------------------------------------------------- */
47 static void ir_handle_key(struct bttv *btv)
49 struct card_ir *ir = btv->remote;
53 gpio = bttv_gpio_read(&btv->c);
55 if (ir->last_gpio == gpio)
61 data = ir_extract_bits(gpio, ir->mask_keycode);
62 dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
64 ir->polling ? "poll" : "irq",
65 (gpio & ir->mask_keydown) ? " down" : "",
66 (gpio & ir->mask_keyup) ? " up" : "");
68 if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) ||
69 (ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
70 ir_input_keydown(ir->dev,&ir->ir,data,data);
72 ir_input_nokey(ir->dev,&ir->ir);
77 void bttv_input_irq(struct bttv *btv)
79 struct card_ir *ir = btv->remote;
85 static void bttv_input_timer(unsigned long data)
87 struct bttv *btv = (struct bttv*)data;
88 struct card_ir *ir = btv->remote;
91 mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
94 /* ---------------------------------------------------------------*/
96 static int bttv_rc5_irq(struct bttv *btv)
98 struct card_ir *ir = btv->remote;
102 unsigned long current_jiffies;
105 gpio = bttv_gpio_read(&btv->c);
111 /* get time of bit */
112 current_jiffies = jiffies;
113 do_gettimeofday(&tv);
115 /* avoid overflow with gap >1s */
116 if (tv.tv_sec - ir->base_time.tv_sec > 1) {
119 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
120 tv.tv_usec - ir->base_time.tv_usec;
123 /* active code => add bit */
125 /* only if in the code (otherwise spurious IRQ or timer
127 if (ir->last_bit < 28) {
128 ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
130 ir->code |= 1 << ir->last_bit;
132 /* starting new code */
139 mod_timer(&ir->timer_end,
140 current_jiffies + msecs_to_jiffies(30));
143 /* toggle GPIO pin 4 to reset the irq */
144 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
145 bttv_gpio_write(&btv->c, gpio | (1 << 4));
149 /* ---------------------------------------------------------------------- */
151 static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
154 setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
155 ir->timer.expires = jiffies + msecs_to_jiffies(1000);
156 add_timer(&ir->timer);
157 } else if (ir->rc5_gpio) {
158 /* set timer_end for code completion */
159 init_timer(&ir->timer_end);
160 ir->timer_end.function = ir_rc5_timer_end;
161 ir->timer_end.data = (unsigned long)ir;
163 init_timer(&ir->timer_keyup);
164 ir->timer_keyup.function = ir_rc5_timer_keyup;
165 ir->timer_keyup.data = (unsigned long)ir;
169 ir->rc5_key_timeout = ir_rc5_key_timeout;
170 ir->rc5_remote_gap = ir_rc5_remote_gap;
174 static void bttv_ir_stop(struct bttv *btv)
176 if (btv->remote->polling) {
177 del_timer_sync(&btv->remote->timer);
178 flush_scheduled_work();
181 if (btv->remote->rc5_gpio) {
184 del_timer_sync(&btv->remote->timer_end);
185 flush_scheduled_work();
187 gpio = bttv_gpio_read(&btv->c);
188 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
192 int bttv_input_init(struct bttv *btv)
195 IR_KEYTAB_TYPE *ir_codes = NULL;
196 struct input_dev *input_dev;
197 int ir_type = IR_TYPE_OTHER;
200 if (!btv->has_remote)
203 ir = kzalloc(sizeof(*ir),GFP_KERNEL);
204 input_dev = input_allocate_device();
205 if (!ir || !input_dev)
208 /* detect & configure */
209 switch (btv->c.type) {
210 case BTTV_BOARD_AVERMEDIA:
211 case BTTV_BOARD_AVPHONE98:
212 case BTTV_BOARD_AVERMEDIA98:
213 ir_codes = ir_codes_avermedia;
214 ir->mask_keycode = 0xf88000;
215 ir->mask_keydown = 0x010000;
216 ir->polling = 50; // ms
219 case BTTV_BOARD_AVDVBT_761:
220 case BTTV_BOARD_AVDVBT_771:
221 ir_codes = ir_codes_avermedia_dvbt;
222 ir->mask_keycode = 0x0f00c0;
223 ir->mask_keydown = 0x000020;
224 ir->polling = 50; // ms
227 case BTTV_BOARD_PXELVWPLTVPAK:
228 ir_codes = ir_codes_pixelview;
229 ir->mask_keycode = 0x003e00;
230 ir->mask_keyup = 0x010000;
231 ir->polling = 50; // ms
233 case BTTV_BOARD_PV_M4900:
234 case BTTV_BOARD_PV_BT878P_9B:
235 case BTTV_BOARD_PV_BT878P_PLUS:
236 ir_codes = ir_codes_pixelview;
237 ir->mask_keycode = 0x001f00;
238 ir->mask_keyup = 0x008000;
239 ir->polling = 50; // ms
242 case BTTV_BOARD_WINFAST2000:
243 ir_codes = ir_codes_winfast;
244 ir->mask_keycode = 0x1f8;
246 case BTTV_BOARD_MAGICTVIEW061:
247 case BTTV_BOARD_MAGICTVIEW063:
248 ir_codes = ir_codes_winfast;
249 ir->mask_keycode = 0x0008e000;
250 ir->mask_keydown = 0x00200000;
252 case BTTV_BOARD_APAC_VIEWCOMP:
253 ir_codes = ir_codes_apac_viewcomp;
254 ir->mask_keycode = 0x001f00;
255 ir->mask_keyup = 0x008000;
256 ir->polling = 50; // ms
258 case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
259 case BTTV_BOARD_CONTVFMI:
260 ir_codes = ir_codes_pixelview;
261 ir->mask_keycode = 0x001F00;
262 ir->mask_keyup = 0x006000;
263 ir->polling = 50; // ms
265 case BTTV_BOARD_NEBULA_DIGITV:
266 ir_codes = ir_codes_nebula;
267 btv->custom_irq = bttv_rc5_irq;
270 case BTTV_BOARD_MACHTV_MAGICTV:
271 ir_codes = ir_codes_apac_viewcomp;
272 ir->mask_keycode = 0x001F00;
273 ir->mask_keyup = 0x004000;
274 ir->polling = 50; /* ms */
277 if (NULL == ir_codes) {
278 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
285 /* enable remote irq */
286 bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
287 gpio = bttv_gpio_read(&btv->c);
288 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
289 bttv_gpio_write(&btv->c, gpio | (1 << 4));
291 /* init hardware-specific stuff */
292 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
295 /* init input device */
298 snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
300 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
301 pci_name(btv->c.pci));
303 ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
304 input_dev->name = ir->name;
305 input_dev->phys = ir->phys;
306 input_dev->id.bustype = BUS_PCI;
307 input_dev->id.version = 1;
308 if (btv->c.pci->subsystem_vendor) {
309 input_dev->id.vendor = btv->c.pci->subsystem_vendor;
310 input_dev->id.product = btv->c.pci->subsystem_device;
312 input_dev->id.vendor = btv->c.pci->vendor;
313 input_dev->id.product = btv->c.pci->device;
315 input_dev->dev.parent = &btv->c.pci->dev;
318 bttv_ir_start(btv, ir);
321 err = input_register_device(btv->remote->dev);
325 /* the remote isn't as bouncy as a keyboard */
326 ir->dev->rep[REP_DELAY] = repeat_delay;
327 ir->dev->rep[REP_PERIOD] = repeat_period;
335 input_free_device(input_dev);
340 void bttv_input_fini(struct bttv *btv)
342 if (btv->remote == NULL)
346 input_unregister_device(btv->remote->dev);